Are you looking for professional physical experiment air compression igniter? , ! Our air compression igniter must meet your needs. Simple in structure, easy to use, simple appearance design, you can use it with confidence. A nice physical experiment equipment to demonstrate the transformation of mechanical energy into heat energy. Features - Color: As shown - Material: Plastic, metal, glass - Size: 27.60X6.00X6.00cm/10.85X2.36X2.36in -Wide of application, suitable as teaching demonstration, mechanical energy to internal energy experiment tool. -It is a simple demonstrator of gas compression. When the gas is compressed quickly, the temperature increases. -It's suitable for junior high school physics course experiment teaching, cultivate children's interest in physics -The fire-leading tool is and interactive experience that keeps student engaged, more intuitive and easy to understand -It provides hands on learning experience as well as being one of the safe heat conversion physics experiment teaching instrument in the classroom Package list: 2 x compression air igniters